Making of a Grinding Fixture Pt 1

[@pierresgarage2687]

This is a labor intensive part, not complete yet, it's great you demonstrate in details the steps since it's the details that makes the final result... Nicely done so far. Hope you and the kids are keeping safely away from the virus, it's real nasty for lots of the ones getting it, all the best to all of you, Pierre

[@SolidRockMachineShopInc]

Hi Pierre, Thanks, so far we are good. We don't know of anyone personally who has the virus. We are being careful and hoping this will past soon with as little damage as possible to others. While our politicians are playing the blame game and pushing their own agendas the true heroes are putting their lives on the line. They are the ones in the background of all the noise quietly doing an amazing job. Steve

[@PhilsProjects]

missed seeing you guys and gals, hope everyone is safe, Cheers to the whole gang

[@SolidRockMachineShopInc]

Hi Phil, It is good to be back. Steve

[@EverettsWorkshop]

That is interesting to see you using A-2, as I've never used it. It makes total sense given the nature of the part, quenching other materials would probably create warp. Enjoyed it, on to part 2!

[@SolidRockMachineShopInc]

Thanks. My favorite steel for tooling is DC53 but I like to have cryogenic done also so I have to send that out. Steve

[@DK-vx1zc]

Nice to see you back! Hope you and your family are/stay healthy.

[@SolidRockMachineShopInc]

Good to be back. We are doing well now. I had a rough few months when they switched my Thyroid meds but doing much better now. Steve

[@PaulWattsSpringGunning]

Thanks! It's always good to see one of your videos come up! I have a old Grieve heat treat oven. At 1800 the outside temp of the oven is slightly more than room temp. I've had people come over and complain about all the stuff piled up on top of it. It did little to heat the shop last winter :-( Thanks for the tip one cooling down. I always left the door open.

[@SolidRockMachineShopInc]

Hi Paul, This one will get hot enough to burn you so you will want a good pair of gloves. Where I use to work they used the air hose to cool it down quite often. That might be why it had to be repaired often as well. Steve

[@outsidescrewball]

Enjoyed...great demonstration and discussion

[@SolidRockMachineShopInc]

Thanks Chuck. Steve

[@sharkrivermachine]

Good to see you back on YT. Thanks for sharing.

[@SolidRockMachineShopInc]

Thanks Steven, good to be back. Steve

[@billdlv]

Nice job Steve, hope you and your family are well.

[@SolidRockMachineShopInc]

Thanks Bill, We are doing fine, how about you? Steve

[@billdlv]

@@SolidRockMachineShopInc So far I am fine still at work (@ a college). One of my co-workers from years ago is sick, is doing OK but they botched his test and he has to get re-tested. Some students are still here because they could not get back home, one was sick but tested negative.

[@SolidRockMachineShopInc]

Hi Bill, Life has changed for many because of this virus and our government says the worse is still to come. I am one of those who hope and pray for the best but prepare for the worst. Hope you and the students stay safe and well. Steve

[@bclare2544]

Good to here from you again Steve and team.

[@SolidRockMachineShopInc]

Thanks. Steve

[@tced2858]

Glad to see your back...

[@SolidRockMachineShopInc]

Good to be back. Steve

[@kimber1958]

Beautiful fixture plate that tapping process looks delightful a pleasure to do

[@SolidRockMachineShopInc]

I love using the automatic tapping head. It is amazing how much time and broken taps it can save. Steve

[@kknives_switzerland]

That's a lot of holes and nice little oven! Thanks for another video

[@SolidRockMachineShopInc]

You bet!

[@TrPrecisionMachining]

very good video..thanks for your time

[@SolidRockMachineShopInc]

You're welcome. Steve

[@ericrichards5862]

Hi Steve, Thanks for the tips in this video, just unpacked my Bar Z Hot Shot oven today!!

[@SolidRockMachineShopInc]

Hi Eric, You're welcome and you will love the oven. Steve

[@santopezzotti730]

Good morning any problems with the taped holes after heat treatment

[@richharr]

Great video, cant wait to see the rest of the videos and the first use!

[@SolidRockMachineShopInc]

Should be soon. Steve

[@RagsdaleCreek]

Nice video just bought me a Tapmatic think I am going to love .

[@SolidRockMachineShopInc]

I believe you will love it. They work real nice when there is a lot of holes to be tapped. Steve

[@rbrpulling]

Thanks, on the list for a 1200. Hard to wait.

[@SolidRockMachineShopInc]

You will love it. Stan does a great job. Steve

[@swanvalleymachineshop]

The tempering temperatures vary a lot depending on the steel don't they . A2 v 4140 , the tempering temp you use for A2 is right smack in the middle of the tempering temps you don't want to be in for 4140 . interesting stuff . Cheers .

[@SolidRockMachineShopInc]

Hi Max, Yes they do. I think a more accurate way to get desired results would be using temperature rather than RC. S7 is an example, you can hit 52RC at 4 different draw back temperatures. 2 of them are at the weakest point and 2 are at the strongest point for S7. Steve

[@bcbloc02]

300F is a pretty low tempering temp for A2. I guess for the application the brittleness isn't really an issue. I normally do A2 at 750 but it only comes out about 56-57Rc.

[@SolidRockMachineShopInc]

Hi Brian, Many steels are weaker and more brittle at about the 55RC range. I know S7 is one of those. I am going for a good combination of wear and toughness. If I remember right the part ended up at 59RC which is perfect for what I wanted. My stove is about 100 degrees off in the low range. the actual temp was about 400 degrees. Steve

[@bcbloc02]

@@SolidRockMachineShopInc Just as a refrence here is a sight that gives the typical A2 curves for hardness and toughness vs Rc. www.hudsontoolsteel.com/technical-data/steelA2

[@JBFromOZ]

great project thanks for sharing Steve

[@SolidRockMachineShopInc]

Thanks JB. Steve

[@sleu752343]

That's very cool where can I get one of the

[@SolidRockMachineShopInc]

Are you talking about the heat treat oven?

[@still_curious6388]

I realize this is an older video, and maybe I'm missing something, but can you explain (or link to another if you covered elsewhere) why the part is wrapped and in what? Is that a part of the tempering process?

[@SolidRockMachineShopInc]

I don't know the exact science behind it but the stainless steel wrap is used to seal the part against air. When steel is exposed to air and heated to high temperatures carbon in the material will form a rough scale on the surface of the part. I believe this also damages the steel by changing the carbon content. I am sure there are a number of internet sources that can explain in detail what takes place here. www.azom.com/article.aspx?ArticleID=9624

[@still_curious6388]

@@SolidRockMachineShopInc Thanks! I understand.. I noted that that company that sells that oven makes an ARGON flow for it to do the same thing. I've not done it, but I understand that scale that develops can be quite a problem

[@kevinstallard7437]

Do you have a website to order your products?

[@SolidRockMachineShopInc]

Not at the moment. We hope to have one in the near future. You can contact Kathy at solidrock@nlbchapel .org and she will give a list of product we have and what is in stock. Steve

[@ShadonHKW]

I think you are going to be ready for a 1200 if your parts get any bigger!

[@SolidRockMachineShopInc]

Hi Stan, I think you may be right about that. I really love the 360 and use it often. Steve

[@gasparini76]

What is your tapmatic model, please?

[@SolidRockMachineShopInc]

It is a 50X. Here is another video on it kzbin.info/www/bejne/hKCtn4x5f92arNU Steve

[@maxcnc777]

I was taught to not let the A2 get all the way down to room temperature before tempering, but it looks like it works fine either way. Is there any noticeable difference?

[@SolidRockMachineShopInc]

Hi Max, There are a lot of minor difference that people use in heat treating. I was always told to remove the wrapping right away but learn from others that it would be less scale and just as hard to let it cool in the wrap. That is how I now do it. I believe the part after 2 draws came out at 59RC. Steve

[@maxcnc777]

@@SolidRockMachineShopInc well, either way thanks for sharing. You and your family do some pretty nice work. I'd love to pick your brain about wire edm tooling.

[@wesbiglin4845]

what name and brand of your furnace?????

[@SolidRockMachineShopInc]

It is a Hotshot 360 from BarZ industrial. kzbin.info/www/bejne/hGKtl6hngM2Ml7M

[@1jtolvey]

GREAT VIDEO !!

[@SolidRockMachineShopInc]

Thanks Steve

[@James-fs4rn]

👍throw some potatoes in there too. Get supper ready and a draw back.

[@SolidRockMachineShopInc]

That is tempting. Steve

[@James-fs4rn]

@@SolidRockMachineShopInc Steve, I picking up a Harig 612 and it is a dry machine. My little experience is with coolant. I'd like some coaching on dry grinding if u have time. Maybe some good video material. Would it be possible to use a stick wax on the part to help the process. I've used it on our carbide diamond bench grinder with good results. Keeps the harmful dust down too. Basically like to know the main differences from dressing to grinding dry vs wet. If you have time. Thanks Steve.

[@SolidRockMachineShopInc]

Hi James, One of the most important things is to get a free cutting wheel that generates as little heat as possible. As you take stock off always be aware of how hot the part is. If it is even a little warm the part will not be flat after it cools. Work your way down to the last .001" redress your wheel and only take a few .0001" at a time until the last .0002" at this point you need to take less than .0001" at a time with blank passes with time for the part to cool between passes. If done right you should be able to grind flat to a .0001" without coolant. It will most likely be a little low in the middle of the part. Steve

[@James-fs4rn]

👌 much appreciated Steve!

[@Fischer977]

Don't you hate it when the edge finder get magnetized?

[@SolidRockMachineShopInc]

Yes.

[@MCEngineeringInc]

Great video!

[@SolidRockMachineShopInc]

Thanks Craig. steve

[@tomeyssen9674]

Steve, great video and thank you. I have ordered a HoShot. Does the program your using come with the oven? I havent asked Stan.....didnt think about that. Thanks -Tom

[@SolidRockMachineShopInc]

Hi Tom, It is a free download from the controllers website. I believe Stan provides the info with the oven. Steve

[@tomeyssen9674]

Thank you Steve 👍

[@SuperAWaC]

those vise jaws are the bees knees

[@SolidRockMachineShopInc]

Thanks. Steve

[@somebodyelse6673]

Odd that industry standard temperature probes aren't being compensated correctly by a programmable controller built to use them. I would have thought ann necessary fudge factors would be built into the controller itself. For the kind of business you're doing now, what do you figure the break-even time is for investing in ovens, versus sending out parts for heat treating?

[@royreynolds108]

I would be willing to bet a lot has to do with saving the time of sending out.

[@SolidRockMachineShopInc]

Hi someone else, Mine is off a little more than most, but by making config files it doesn't matter to me. The break even is not important to me as much as the convenience of having something done right away. I used it enough already that it would have paid for itself already. Steve

[@SolidRockMachineShopInc]

You are correct Roy. They are cheap enough to pay for themselves very fast as well. Steve

[@mr.t.807]

What type of of video editing software are you using. And what camera you are using too

[@SolidRockMachineShopInc]

Adobe premiere elements and usually a Olympus E-M1 II or a E-M5 II.

[@rickhaass1133]

thanks for the info

[@SolidRockMachineShopInc]

You're welcome Rick. Steve

[@toolbox-gua]

Always nive. Take care and prevent Covid-19 getting to you.

[@SolidRockMachineShopInc]

So far we are doing well. Steve

[@earleclemans4836]

What tap is that?

[@SolidRockMachineShopInc]

It is an OSG A tap. Steve

[@earleclemans4836]

@@SolidRockMachineShopInc ok cool wheres the best place to get them?

[@SolidRockMachineShopInc]

@@earleclemans4836 Most Industrial supplies should be able to get them. Steve

[@joehosie]

Wow SRMS! Great video yet again!

[@SolidRockMachineShopInc]

Thanks Joe. Steve

[@santopezzotti730]

Good morning any problems with the taped holes after heat treatment

[@SolidRockMachineShopInc]

I use oversize taps they are .005" over so most of the time no problems. In DC-53 you have issues with small particles fusing to the threads if you do not clean the holes really good before heat treat.

[@santopezzotti730]

Thank you . I am a 73 year old newbie